PRETUL 27081, Manual

8

Start Up

ENGLISH

Torque

regulator

• To select the desired torque level to screw drive, turn the torque 

regulator until it matches the corresponding number with the upper mark:

From 1 to 3 for small screws,

From 4 to 7 for screws on soft materials,

From 8 to 11 for screws on soft and hard material.

From 12 to 15 for screws on hard wood,

On 16 to 21, for larger screws.

                          • The torque level necessary depends on the type of 

screw to be used and the material onto which you are working.  If in 

doubt use a lower torque and increase gradually until reaching the right 

one.  An adequate torque prevents damaging the tool. 

Torque Adjust

CAUTION

LED light is ON while 

the switch is pushed 

and is OFF when 

releasing the switch.

Turn On and operation control

• The switch allows selecting the adequate speed for each 

job. The more you push the switch the fastest the drill will 

run.

• The switch is also built with a braking function. When 

releasing the trigger, the drill will immediately stop and you 

will be able to use it as a manual screwdriver to give a screw 

an extra turn.

Screwing - Unscrewing

• It is recommended to first bore a “pilot orifice”; slightly 

longer and barely narrower than the measurements of the 

screw. This orifice will be the entry guide for the screw and 

will make it easier to tighten. When screwing near the edge 

of a work piece, a pilot orifice prevents the wood from 

cracking.

• Use the adequate type of tip for each screw head to 

prevent the screw from sticking over from the surface.

• If inserting the screw gets difficult, remove and try to 

bore a slightly longer or wider orifice. However keep in 

mind there should be enough material to fasten the screw.  

If you reinitiate the screwing operation in an already-made 

orifice, start threading it by hand. If still difficult to thread 

the screw (as with noble woods), try using lubricants like 

soap. Liquid soap is more useful.

• Always apply enough pressure on the drill to prevent the 

screw head to slide.  It is easy that the screw head gets 

damaged, making it difficult to completely get inserted or 

even to remove it.

Additional recommendations

• Use the adequate speed for each job: do not try to bore at low speeds or to screw at high speeds.

• If the operation overloads the drill, take it out and repeat the operation applying less strength.

• Use low speeds to start bores where there is no support point; on plastic or metal; when screwing, boring ceramic or any 

other application that requires a high torque.  Use high speeds to drill woods and using polishing devices. 

• To get a longer drill duty life, use the variable speed control.

Drilling

• When trying to bore large diameter orifices it is better to 

start with a narrow bit and then replace it with the required 

size. This prevents overloading the drill.

• When drilling deep orifices remove the bit a little and 

regularly while boring to allow the shavings to be correctly 

expelled from the orifice.

                          • If the bit gets stuck, immediately release 

the switch to prevent damaging   the tool.  Try to release the 

bit reversing the operation direction.

• Keep the drill aligned regarding the orifice.  Ideally the bit 

shall enter the work piece perpendicularly.  If the angle is 

changed while drilling, it could make the bit to break and 

block the orifice or causing personal injury.

CAUTION